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Post-decoration method for dye sensitization light anode of dye sensitization solar battery

A solar cell and dye sensitization technology, which is applied in the field of designing dye-sensitized solar cell materials, can solve the problems of easily corroded electrodes, battery performance degradation, dye desorption, etc., and achieve improved open circuit voltage and short circuit current, enhanced stability, Reduce the effect of reverse compounding

Active Publication Date: 2009-03-18
北京索尔泰克能源技术研究所 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In terms of stability, the volatility and permeability of the solvent in the electrolyte are unavoidable. At the same time, the presence of the electrolyte is also easy to corrode the electrode, resulting in desorption of the dye and degradation of battery performance.
Therefore, the problem of battery life is an inevitable problem to be solved in the practical application of DSSC.

Method used

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  • Post-decoration method for dye sensitization light anode of dye sensitization solar battery
  • Post-decoration method for dye sensitization light anode of dye sensitization solar battery
  • Post-decoration method for dye sensitization light anode of dye sensitization solar battery

Examples

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Effect test

example 1

[0026] Example 1: Use titanium dioxide colloid to scrape the film on the transparent conductive glass ITO, sinter at 450 ° C for 30 minutes to obtain a nanoporous structure wide bandgap semiconductor titanium dioxide film, then soak it in 5 mmol / L dye solution for 30 minutes, take it out and rinse it with absolute ethanol , the TiO 2 Porous membrane in 0.015mol / L Al[OCH(CH 3 ) 2 ] 3 / isopropanol solution for 30s, rinsed with ethanol, dried in the air, and placed in the air for 1 hour to obtain a dye-sensitized photoanode. A quasi-solid electrolyte is used, and a platinum-plated conductive glass is used as a counter electrode to assemble a battery. at 100mW / cm 2 Under white light irradiation, the measured open circuit voltage of the battery is 0.70V, and the short circuit current is 7.72mA / cm 2 , the fill factor is 61.3%, and the total photoelectric conversion efficiency is 3.32%.

example 2

[0027] Example 2: Use titanium dioxide colloid to scrape the film on the transparent conductive glass ITO, sinter at 450 ° C for 30 minutes to obtain a nanoporous structure wide bandgap semiconductor titanium dioxide film, then soak it in 5 mmol / L dye solution for 24 hours, take it out with absolute ethanol Rinse, this TiO 2 Porous membrane in 0.5mol / L Ga(H 2 PO 2 ) 3 / isopropanol solution for 15 minutes, rinsed with ethanol, dried in the air, and placed in the air for 1 hour to obtain a dye-sensitized photoanode. A quasi-solid electrolyte is used, and a platinum-plated conductive glass is used as a counter electrode to assemble a battery. at 100mW / cm 2 Under the simulated sunlight, the measured open circuit voltage of the battery is 0.68V, and the short circuit current is 7.24mA / cm 2 , the fill factor is 63.9%, and the total photoelectric conversion efficiency is 3.15%.

example 3

[0028] Example 3: Use titanium dioxide colloid to scratch the film on the transparent conductive glass ITO, sinter at 450 ° C for 30 minutes to obtain a nanoporous structure wide bandgap semiconductor titanium dioxide film, then soak it in 5 mmol / L dye solution for 12 hours, take it out with absolute ethanol Rinse, this TiO 2 Porous membrane in 1mol / L Ti(OC 4 h 9 ) / butanol solution for 2 min, rinsed with ethanol, dried in the air, and placed in air for 1 hour to obtain a dye-sensitized photoanode. A quasi-solid electrolyte is used, and a platinum-plated conductive glass is used as a counter electrode to assemble a battery. at 100mW / cm 2 Under white light irradiation, the measured open circuit voltage of the battery is 0.713V, and the short circuit current is 7.18mA / cm 2 , the fill factor is 64.9%, and the total photoelectric conversion efficiency is 3.32%.

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Abstract

A later-modified method for dye-sensitized photo anode in a dye-sensitized solar cell belongs to the field of dye-sensitized solar cell, which is characterized in that after complement absorbing dye of a prepared nanometer porous TiO2 photo anode, the dye-sensitized photo anode is modified with metal compound layer, and the later-modified method of dye-sensitized photo anode has two advantages: on one hand, preventing agglomeration of dye through exchanging of in-situ proton in order to reduce backward composition of electrodes injected through TiO2 guiding belt and an oxidation-reduction pair in electrolyte and improve photoelectric conversion efficiency of solar cell; on the other hand, separating TiO2 and electrolyte in space to restrain solvent process of dye desorbing from surface of TiO2 and dissolving into electrolyte and preventing electrolyte from being degraded by TiO2 with a good photo-catalysis performance in order to improve stability of solar cell, and after being modified by metal compound layer, the dye-sensitized solar cell improves the photoelectric conversion efficiency by 20 percent and the stability of unsealed battery largely surpasses battery without later-modified layer.

Description

Technical field: [0001] The invention relates to the field of designing dye-sensitized solar cell materials, in particular to the post-modification method of metal compounds on dye-sensitized nanoporous TiO2 membranes Background technique: [0002] At present, 80% of the world's energy comes from fossil fuels represented by petroleum and coal. With the rapid increase of world population and the rapid development of human society, the growth and consumption of human energy demand are also getting faster and faster. But as non-renewable energy, fossil energy cannot meet the long-term needs of human beings. People's demand for environmentally friendly renewable energy technology is becoming more and more urgent. With its unique advantages, solar cells have attracted people's attention and are considered to be the most promising new energy utilization method. [0003] The amount of solar energy resources is very huge, and it is almost not limited by geographical conditions, an...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L31/18H01L51/48H01L21/283H01G9/04H01G9/20H01M14/00H01M4/04
CPCY02E60/12Y02E10/542Y02E10/549Y02E60/10Y02P70/50
Inventor 邱勇罗芬王立铎吴学明吴骅
Owner 北京索尔泰克能源技术研究所
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